为了加强矿区勘探工作的科学管理、正确地选用设备和器材、合理地制订生产及材料消耗定额、正确地估算矿区勘探的投资,对一个勘探矿区进行岩芯钻探难易程度的综合评判是十分必要的. 以往国内外地质勘探部门在对岩石分级的研究中,多只限于岩石可钻性的研究,即提出各种岩石按可钻性分级的方案.这种分级仅考虑岩石机械破碎的难易程度,而未考虑地质复杂、孔壁 In order to strengthen the scientific management of the exploration work in the mining area, it is necessary to properly select the equipment and equipment, to formulate a reasonable production and material consumption quota and correctly estimate the investment in the exploration of the mining area, and to make a comprehensive evaluation of the ease of core drilling in a prospecting area Of the past geological exploration departments at home and abroad in the rock grading research, mostly confined to the study of rock drillability, that is, put forward a variety of rock classification according to drillability of this classification only consider the difficulty of rock mechanical crushing Degree, without considering the complex geological, pore wall